I have 191 VWK with M Werks King Pins and 186 BMT 109’s with Dynafit Rotations. Also have the 122 and 94.
I originally bought the VW Kantana’s as a resort cross over ski back in 2017 after demoing them and being blown away. I also demoed the 109’s and found them similar, but definitely more mellow.
Later bought 109’s to use as a dedicated BC ski as they are lighter and that difference is noticeable on long hauls and, as much as I like the 109’s, I have many times found their speed limit on big open faces and wished I had the Katana’s.
I swapped out the original Kingpins on my Katana’s for the lighter and easier to step into M Werks Kingpins which mounted in the same holes. This helped a bit with weight, but lately I have been contemplating getting a pair and mounting them with Alpinists or ATK raiders which would shave off another 300 grams.
Last spring I brought both the BMT 109’s and Katana’s on a Heli Assist back country trip where we skied some big challenging terrain. I started out on the 109’s and quickly switched to the Katana’s as they were so much superior skiing big steep terrain at speed. 109’s are great for trees and more mellow terrain, being softer, more rockered, and more progressively mounted and I love the looser more slavery feel for the average day, but they don’t hold a candle to the Katana’s for big mountain skiing.